<template>
  <div>
    <div ref="mychart" style="width: 100%; height: 400px"></div>
  </div>
</template>

<script>
import * as echarts from "echarts";
export default {
  data() {
    const data = [];
    for (let i = 0; i < 5; ++i) {
      data.push(Math.round(Math.random() * 200));
    }
    function run() {
      for (var i = 0; i < data.length; ++i) {
        if (Math.random() > 0.9) {
          data[i] += Math.round(Math.random() * 2000);
        } else {
          data[i] += Math.round(Math.random() * 200);
        }
      }
      myChart.setOption({
        series: [
          {
            type: "bar",
            data,
          },
        ],
      });
    }
    setTimeout(function () {
      run();
    }, 0),
      setInterval(function () {
        run();
      }, 3000);
    return {
      arr: {
        xAxis: {
          max: "dataMax",
        },
        yAxis: {
          type: "category",
          data: ["A", "B", "C", "D", "E"],
          inverse: true,
          animationDuration: 300,
          animationDurationUpdate: 300,
          max: 2, // only the largest 3 bars will be displayed
        },
        series: [
          {
            realtimeSort: true,
            name: "X",
            type: "bar",
            data: data,
            label: {
              show: true,
              position: "right",
              valueAnimation: true,
            },
          },
        ],
        legend: {
          show: true,
        },
        animationDuration: 0,
        animationDurationUpdate: 3000,
        animationEasing: "linear",
        animationEasingUpdate: "linear",
      },
    };
  },
  mounted() {
    this.getlist();
    window.addEventListener("resize", this.mychart.resize);
  },
  methods: {
    getlist() {
      //1.获取dom
      const chartDom = this.$refs.mychart;
      //2.初始化
      this.mychart = echarts.init(chartDom);

      //   配置图表数据
      const option = this.arr;

      //4.渲染生成图表
      this.mychart.setOption(option);
    },
  },
};
</script>
